Hermann Seifert

Person

Bergisch Gladbach, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Method for producing heterocyclic compounds
- Patent number 6,667,401
- Issue date Dec 23, 2003
- Bayer Aktiengesellschaft
- Hermann Seifert
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing heterocyclic compounds
- Patent number 6,211,379
- Issue date Apr 3, 2001
- Bayer Aktiengesellschaft
- Hermann Seifert
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 4-hydroxyanilines
- Patent number 6,124,504
- Issue date Sep 26, 2000
- Bayer Aktiengesellschaft
- Achim Hupperts
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing O-alkyl, O-alkylphosphorochloridothioates
- Patent number 5,948,930
- Issue date Sep 7, 1999
- Bayer Corporation
- David M. Mayes
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 5-hydroxy-3,4,5,6-tetrahydro-pyrimid...
- Patent number 5,162,529
- Issue date Nov 10, 1992
- Bayer Aktiengesellschaft
- Reinhard Lantzsch
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of O,S-dimethyl-thiolophosphoric acid amide
- Patent number 4,537,730
- Issue date Aug 27, 1985
- Bayer Aktiengesellschaft
- Peter Feyen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of propylene oxide
- Patent number RE31381
- Issue date Sep 13, 1983
- Bayer Aktiengesellschaft
- Gunter Prescher
- 549 - Organic compounds
Information Patent Grant
Process for the preparation of polyhydric phenols
- Patent number 4,387,252
- Issue date Jun 7, 1983
- Bayer Aktiengesellschaft
- Christoph Jupe
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the purification of epoxides
- Patent number 4,369,096
- Issue date Jan 18, 1983
- Bayer Aktiengesellschaft
- Hermann Seifert
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Stabilizing caprolactones with dihydroxybenzenes
- Patent number 4,360,682
- Issue date Nov 23, 1982
- Deutsche Gold- und Silberscheideanstalt vormals Roessler
- Herbert Klenk
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of percarboxylic acid solutions
- Patent number 4,344,897
- Issue date Aug 17, 1982
- Bayer Aktiengesellschaft
- Ralf Goedecke
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of .epsilon.-caprolactone
- Patent number 4,341,709
- Issue date Jul 27, 1982
- Bayer Aktiengesellschaft
- Willi Hofen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of propylene oxide
- Patent number RE30945
- Issue date May 25, 1982
- Bayer AG
- Guter Prescher
- 549 - Organic compounds
Information Patent Grant
Process for the preparation of polyhydric phenols
- Patent number 4,324,925
- Issue date Apr 13, 1982
- Bayer Aktiengesellschaft
- Christoph Jupe
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the hydroxylation of phenol
- Patent number 4,214,105
- Issue date Jul 22, 1980
- Bayer Aktiengesellschaft
- Hermann Seifert
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 5-(oxiranylmethyl)-1,3-benzodioxole
- Patent number 4,212,809
- Issue date Jul 15, 1980
- Bayer Aktiengesellschaft
- Gebhard Rauleder
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Process for the preparation of polyhydric phenols
- Patent number 4,182,918
- Issue date Jan 8, 1980
- Bayer Aktiengesellschaft
- Hermann Seifert
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of polyhydric phenols
- Patent number 4,182,917
- Issue date Jan 8, 1980
- Bayer Aktiengesellschaft
- Hermann Seifert
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the hydroxylation of phenols and phenol ethers in the n...
- Patent number 4,174,460
- Issue date Nov 13, 1979
- Bayer Aktiengesellschaft
- Hermann Seifert
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of propylene oxide
- Patent number 4,137,242
- Issue date Jan 30, 1979
- Bayer Aktiengesellschaft
- Gunter Prescher
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of propylene oxide
- Patent number 4,113,747
- Issue date Sep 12, 1978
- Bayer Aktiengesellschaft
- Gunter Prescher
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Method for producing heterocyclic compounds
- Publication number 20030114667
- Publication date Jun 19, 2003
- Hermann Seifert
- C07 - ORGANIC CHEMISTRY

Hermann Seifert

Person

Patents Grantslast 30 patents

Method for producing heterocyclic compounds

Process for preparing heterocyclic compounds

Process for preparing 4-hydroxyanilines

Process for preparing O-alkyl, O-alkylphosphorochloridothioates

Process for the preparation of 5-hydroxy-3,4,5,6-tetrahydro-pyrimid...

Preparation of O,S-dimethyl-thiolophosphoric acid amide

Process for the preparation of propylene oxide

Process for the preparation of polyhydric phenols

Process for the purification of epoxides

Stabilizing caprolactones with dihydroxybenzenes

Process for the preparation of percarboxylic acid solutions

Preparation of .epsilon.-caprolactone

Process for the preparation of propylene oxide

Process for the preparation of polyhydric phenols

Process for the hydroxylation of phenol

Process for the preparation of 5-(oxiranylmethyl)-1,3-benzodioxole

Process for the preparation of polyhydric phenols

Process for the preparation of polyhydric phenols

Process for the hydroxylation of phenols and phenol ethers in the n...

Process for the preparation of propylene oxide

Process for the preparation of propylene oxide

Patents Applicationslast 30 patents

Method for producing heterocyclic compounds